US12048602B2 - Electric toothbrush comprising three-sided bristles - Google Patents

Electric toothbrush comprising three-sided bristles Download PDF

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Publication number
US12048602B2
US12048602B2 US17/403,817 US202117403817A US12048602B2 US 12048602 B2 US12048602 B2 US 12048602B2 US 202117403817 A US202117403817 A US 202117403817A US 12048602 B2 US12048602 B2 US 12048602B2
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Prior art keywords
disposed
sheet
brushing
platy body
handle part
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US17/403,817
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US20210369432A1 (en
Inventor
Mao ZHAO
Yaoqing ZHU
Jian Zhang
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Shanghai Heisr Intelligent Technology Co Ltd
Shanghai Heisr Intelligent Technology Co Ltd
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Shanghai Heisr Intelligent Technology Co Ltd
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Assigned to Shanghai Heisr Intelligent Technology Co., Ltd. reassignment Shanghai Heisr Intelligent Technology Co., Ltd. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: ZHANG, JIAN, ZHAO, Mao, ZHU, Yaoqing
Publication of US20210369432A1 publication Critical patent/US20210369432A1/en
Priority to US18/755,628 priority Critical patent/US20240341937A1/en
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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C17/00—Devices for cleaning, polishing, rinsing or drying teeth, teeth cavities or prostheses; Saliva removers; Dental appliances for receiving spittle
    • A61C17/16—Power-driven cleaning or polishing devices
    • A61C17/22—Power-driven cleaning or polishing devices with brushes, cushions, cups, or the like
    • A61C17/32—Power-driven cleaning or polishing devices with brushes, cushions, cups, or the like reciprocating or oscillating
    • A61C17/34—Power-driven cleaning or polishing devices with brushes, cushions, cups, or the like reciprocating or oscillating driven by electric motor
    • A—HUMAN NECESSITIES
    • A46—BRUSHWARE
    • A46B—BRUSHES
    • A46B13/00—Brushes with driven brush bodies or carriers
    • A46B13/02—Brushes with driven brush bodies or carriers power-driven carriers
    • A—HUMAN NECESSITIES
    • A46—BRUSHWARE
    • A46B—BRUSHES
    • A46B15/00—Other brushes; Brushes with additional arrangements
    • A46B15/0093—Magazins or sets of brushes components, e.g. plurality of brushes linked as a package
    • A—HUMAN NECESSITIES
    • A46—BRUSHWARE
    • A46B—BRUSHES
    • A46B9/00—Arrangements of the bristles in the brush body
    • A46B9/02—Position or arrangement of bristles in relation to surface of the brush body, e.g. inclined, in rows, in groups
    • A46B9/04—Arranged like in or for toothbrushes
    • A46B9/045—Arranged like in or for toothbrushes specially adapted for cleaning a plurality of tooth surfaces simultaneously
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C17/00—Devices for cleaning, polishing, rinsing or drying teeth, teeth cavities or prostheses; Saliva removers; Dental appliances for receiving spittle
    • A61C17/16—Power-driven cleaning or polishing devices
    • A61C17/22—Power-driven cleaning or polishing devices with brushes, cushions, cups, or the like
    • A61C17/32—Power-driven cleaning or polishing devices with brushes, cushions, cups, or the like reciprocating or oscillating
    • A61C17/34—Power-driven cleaning or polishing devices with brushes, cushions, cups, or the like reciprocating or oscillating driven by electric motor
    • A61C17/3409—Power-driven cleaning or polishing devices with brushes, cushions, cups, or the like reciprocating or oscillating driven by electric motor characterized by the movement of the brush body
    • A61C17/3463—Translation along the axis perpendicular to the plane defined by the bristle holder
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C17/00—Devices for cleaning, polishing, rinsing or drying teeth, teeth cavities or prostheses; Saliva removers; Dental appliances for receiving spittle
    • A61C17/16—Power-driven cleaning or polishing devices
    • A61C17/22—Power-driven cleaning or polishing devices with brushes, cushions, cups, or the like
    • A61C17/32—Power-driven cleaning or polishing devices with brushes, cushions, cups, or the like reciprocating or oscillating
    • A61C17/34—Power-driven cleaning or polishing devices with brushes, cushions, cups, or the like reciprocating or oscillating driven by electric motor
    • A61C17/3409—Power-driven cleaning or polishing devices with brushes, cushions, cups, or the like reciprocating or oscillating driven by electric motor characterized by the movement of the brush body
    • A61C17/3472—Power-driven cleaning or polishing devices with brushes, cushions, cups, or the like reciprocating or oscillating driven by electric motor characterized by the movement of the brush body with combined movements of the brush body
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C17/00—Devices for cleaning, polishing, rinsing or drying teeth, teeth cavities or prostheses; Saliva removers; Dental appliances for receiving spittle
    • A61C17/16—Power-driven cleaning or polishing devices
    • A61C17/22—Power-driven cleaning or polishing devices with brushes, cushions, cups, or the like
    • A61C17/32—Power-driven cleaning or polishing devices with brushes, cushions, cups, or the like reciprocating or oscillating
    • A61C17/34—Power-driven cleaning or polishing devices with brushes, cushions, cups, or the like reciprocating or oscillating driven by electric motor
    • A61C17/349—Power-driven cleaning or polishing devices with brushes, cushions, cups, or the like reciprocating or oscillating driven by electric motor with multiple brush bodies
    • A—HUMAN NECESSITIES
    • A46—BRUSHWARE
    • A46B—BRUSHES
    • A46B2200/00—Brushes characterized by their functions, uses or applications
    • A46B2200/10—For human or animal care
    • A46B2200/1066—Toothbrush for cleaning the teeth or dentures
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C17/00—Devices for cleaning, polishing, rinsing or drying teeth, teeth cavities or prostheses; Saliva removers; Dental appliances for receiving spittle
    • A61C17/16—Power-driven cleaning or polishing devices
    • A61C17/22—Power-driven cleaning or polishing devices with brushes, cushions, cups, or the like
    • A61C17/32—Power-driven cleaning or polishing devices with brushes, cushions, cups, or the like reciprocating or oscillating
    • A61C17/34—Power-driven cleaning or polishing devices with brushes, cushions, cups, or the like reciprocating or oscillating driven by electric motor
    • A61C17/3409—Power-driven cleaning or polishing devices with brushes, cushions, cups, or the like reciprocating or oscillating driven by electric motor characterized by the movement of the brush body
    • A61C17/3427—Rotation around the axis perpendicular to the axis of toothbrush handle and in the plane defined by the bristle holder

Definitions

  • the disclosure relates to the mechanical field, and more particularly to an electric toothbrush.
  • the toothbrush head of a conventional electric toothbrush has only one-sided brush bristles. As the upper and lower rows of the teeth are rough, the blind area in the upper and inner sides of the teeth are difficult to clean. In addition, when brushing the teeth, it is necessary to change the directions of the toothbrush head for many times to clean the outer sides and the inner sides of the teeth and the surfaces of the molar teeth, which is time-consuming and laborious and a bad tooth brushing habit may be developed.
  • One objective of the disclosure is to provide an electric toothbrush comprising three-sided brush bristles.
  • the disclosure provides an electric toothbrush comprising a toothbrush body; the toothbrush body comprises a toothbrush head; the toothbrush head comprises a handle part, a first platy body disposed below the handle part, and a first brushing sheet and a second brushing sheet disposed side by side and below the first platy body; and
  • the handle part comprises a first through hole, and a first pressing nail disposed through the first through hole; with the first pressing nail as a first rotating shaft, the first platy body comprises a first mounting hole for receiving the first rotating shaft;
  • the lining plate comprises two second mounting holes, and the two second mounting holes are respectively disposed in two side portions of the lining plate;
  • the brush bristles on the lower surface of the second platy body are disposed vertically; the brush bristles on the rear side surface of the first brushing sheet are disposed obliquely and the brush bristles on the front side surface of the second brushing sheet are disposed obliquely.
  • the first platy body comprises a first cylindrical protrusion; a front portion of the handle part comprises a driving wheel; with the first cylindrical protrusion as a first rotating shaft, a middle portion of the driving wheel comprises a first through hole for receiving the first rotating shaft;
  • the driven wheel and the cam are of an integrated structure.
  • the electric toothbrush comprises two first brushing sheet brackets, and the two first brushing sheet brackets are respectively disposed on two side portions of the lining plate;
  • the brush bristles on the lower surface of the second platy body are disposed vertically, the brush bristles on the rear side surface of the first brushing sheet are disposed obliquely and the brush bristles on the front side surface of the second brushing sheet are disposed obliquely.
  • a rear side surface of the first brushing sheet comprises a first embedding groove, and a first tooth contact piece is disposed in the first embedding groove; the first tooth contact piece comprises a first protrusion, and an outer side surface of the first protrusion is cambered; and
  • a front portion of the handle part comprises a mounting hole; a fixed nail is disposed through the mounting hole; the first platy body is disposed below the handle part; with the fixed nail as a first rotating shaft, a middle portion of the first platy body comprises a first through hole for receiving the first rotating shaft;
  • a cross section of the cam is elliptical.
  • the electric toothbrush comprises two first brushing sheets, and the two first brushing sheets are respectively disposed on two side portions of the first sliding piece;
  • the first brushing sheets are connected to the first sliding piece via the second rotating shaft, and the second brushing sheets are connected to the second sliding piece via the third rotating shaft.
  • the brush bristles on the lower surface of the first platy body are disposed vertically, the brush bristles on the rear side surface of the first brushing sheet are disposed obliquely and the brush bristles on the front side surface of the second brushing sheet are disposed obliquely.
  • a rear side surface of the first brushing sheet comprises a first embedding groove; a first tooth contact piece is disposed in the first embedding groove; the first tooth contact piece comprises a first protrusion, and an outer side surface of the first protrusion is cambered; and
  • a second platy body is disposed below the handle part; the second platy body comprises a first cylindrical protrusion, and the front portion of the handle part is provided with a first groove for receiving the first cylindrical protrusion;
  • the front portion of the handle part comprises a second groove; a side wall of the second groove is provided with a fourth cylindrical protrusion and a fifth cylindrical protrusion; a first connecting rod is fixed to the fourth cylindrical protrusion, and a cross section of the first connecting rod is V-shaped; the middle portion of the first connecting rod is provided with a third through hole for receiving the fourth cylindrical protrusion;
  • the following advantages are associated with the electric toothbrush comprising three-sided brush bristles of the disclosure. Owing to the surrounding effect of the three-sided brush bristles and adapting to the thickness change from the frontal teeth to the molar teeth, a self-adaptive effect that the brush bristles automatically attach to the teeth can achieve the purpose of effectively cleaning the teeth of people with different sizes of oral cavities and teeth.
  • the design of the three-sided brush bristles solves the cleaning problem of the blind area on the inner side of the tooth and avoids the development of various bad tooth brushing habits. A user no longer needs to change the position of the toothbrush to search for a cleaning point and only needs to push the toothbrush head to complete the whole tooth brushing process, such that the tooth brushing process is simplified and the tooth brushing efficiency is improved.
  • FIG. 1 is a partial structural schematic diagram of an electric toothbrush of Example 1;
  • FIG. 2 is an exploded view of a partial structure of the electric toothbrush of Example 1;
  • FIG. 3 is a schematic diagram of the electric toothbrush of Example 1 in a use state
  • FIG. 4 is a partial structural schematic diagram of an electric toothbrush of Example 2.
  • FIG. 5 is an exploded view of a partial structure of the electric toothbrush of the Example 2;
  • FIG. 6 is a partial structural schematic diagram of the electric toothbrush of Example 3.
  • FIG. 7 is an exploded view of a partial structure of the electric toothbrush of Example 3.
  • FIG. 8 is a partial structural schematic diagram of an electric toothbrush of Example 4.
  • FIG. 9 is an exploded view of a partial structure of the electric toothbrush of Example 4.
  • FIG. 10 is a top view of a partial structure of the electric toothbrush of Example 4.
  • FIG. 11 is an exploded view of the electric toothbrush of the electric toothbrush of Example 4.
  • an electric toothbrush with the three-sided brush bristles comprises a toothbrush body; the toothbrush body comprises a toothbrush head; the toothbrush head comprises a handle part 1 the handle part comprises a first through hole and a first pressing nail 16 disposed through the first through hole; the first pressing nail is taken as a first rotating shaft, and the first platy body 4 is disposed below the first platy body 4 ; the first platy body comprises a first mounting hole for receiving the first rotating shaft; a second platy body 6 is disposed below the first platy body, and a lower surface of the second platy body is provided with a brush bristle; a front side of the first platy body is provided with a sliding plate 5 ; a back portion of the sliding plate extends into a space between the first platy body and the second platy body, and two side portions of the first platy body are provided with sliding grooves 3 , respectively; a back portion of the sliding plate is provided with two sliding blocks matched with the sliding grooves; an upper portion of each
  • the connecting rod is taken as a second rotating shaft, and a brushing sheet bracket 14 is disposed below the lining plate; the brushing sheet bracket comprises a third mounting hole for receiving the second rotating shaft; the first brushing sheet 9 is disposed below the brushing sheet bracket, and a back side surface of the first brushing sheet is provided with the brush bristle; a steering member 12 is disposed above the sliding plate, and the steering member comprises a first insert hole for receiving an upper portion of the connecting rod; a back portion of the steering member is provided with a groove, and a side portion of the handle part close to the groove is provided with a protrusion 10 for pushing the steering member to deflect; the second platy body comprises a fourth mounting hole; a second pressing nail 17 is disposed through the fourth mounting hole; with the second pressing nail as a third rotating shaft, a second brushing sheet 8 is disposed below the second platy body; the second brushing sheet comprises a fifth mounting hole for receiving the third rotating shaft, and a front side surface of the second brushing sheet is provided with the brush
  • a self-adaptive effect that the brush bristles automatically attach to the teeth can achieve the purpose of effectively cleaning the teeth of people with different sizes of oral cavities and teeth.
  • the design of the three-sided brush bristles solves the cleaning problem of the blind area on the inner side of the tooth and avoids the development of various bad tooth brushing habits. A user no longer needs to change the position of the toothbrush to search for a cleaning point and only needs to push the toothbrush head to complete the whole tooth brushing process, such that the tooth brushing process is simplified and the tooth brushing efficiency is improved.
  • the electric toothbrush comprises two second mounting holes, and the two second mounting holes are respectively disposed in two side portions of the lining plate.
  • the electric toothbrush comprises two fourth mounting holes, and the two fourth mounting holes are respectively disposed in two side portions of the second platy body.
  • the electric toothbrush comprises two first brushing sheets and second brushing sheets; the four brushing sheets are rotatable, and different curved surfaces of teeth are laminated according to the design of the split brush bristles effectively, such that teeth gaps are cleaned efficiently.
  • the cross section of the groove is U-shaped. It is convenient for the protrusion on the front side of the handle part to push the steering member to generate angle deflection; the larger the angle by which the handle part rotates is, the larger the gap between the first brushing sheet and the second brushing sheet is. The effect of being self-adaptive to tooth thickness is improved.
  • the handle part is provided with the second embedding groove, and the upper portion of the stop dog is disposed in the second embedding groove.
  • a side surface of the stop dog close to the first rotating shaft is a cambered surface. In order to detach the stop dog, one side surface of the stop dog is cambered, thereby improving the bulky body pushing effect, and it is smoother to push the bulky body.
  • the brush bristles on the lower surface of the second platy body are disposed vertically, the brush bristles on the rear side surface of the first brushing sheet are disposed obliquely and the brush bristles on the front side surface of the second brushing sheet are disposed obliquely.
  • each of the brush bristle brackets is V-shaped; the third mounting hole is formed in the middle portion of the brush bristle bracket; two side portions of the brush bristle bracket are provided with second insertion holes; the upper portion of the first brushing sheet is provided with two cylindrical protrusions, and the cylindrical protrusions are inserted into the second insertion holes.
  • the upper portion of the first brushing sheet is provided with a third embedding groove; the third embedding groove is internally provided with a nut; a lower portion of the connecting rod is provided with an external nut, and a lower portion of the connecting rod is screwed into the nut.
  • the first pressing nail comprises a first head and a first straight bar disposed below the first head; the first straight bar penetrates through the first through hole, and a width of the first head is greater than a diameter of the first through hole.
  • the second pressing nail comprises a second head and a second straight bar disposed below the second head; the second straight bar penetrates through the second through hole, and a width of the second head is greater than a diameter of the fourth through hole.
  • the front surface of the toothbrush is placed in the oval cavity, and the user pushes the handle part along a tooth-brushing direction; the handle part rotates, and the protrusion disposed on the front side of the handle part pushes the steering member to deflect at angle, such that a certain gap is distracted to fit a corner of a tooth; the handle part rotates continuously; the stop dog mounted on the handle part pushes the bulky body to shift along with rotation; the bulky body drives the sliding plate and the connecting piece to shift together, such that the first brushing sheet and the second brushing sheet expand towards two sides along with thickness change to be self-adaptive to the thickness change from the front tooth to the molar tooth, and then the brush bristle is frapped by the spring to fit the tooth. Further, by matching and exerting the parts, a self-adaptive effect of expanding the toothbrush head, clinging the toothbrush head to the teeth and transforming the angle freely is achieved.
  • an electric toothbrush with the three-sided brush bristles comprises a toothbrush body; the toothbrush body comprises a toothbrush head; the toothbrush head comprises a handle part 18 ; the first platy body 21 is disposed below the handle part; the first platy body comprises a first cylindrical protrusion 28 ; a front portion of the handle part is provided with the driving wheel 27 ; the first cylindrical protrusion is taken as the first rotating shaft, and a middle portion of the driving wheel comprises a first through hole for receiving the first rotating shaft; the first platy body is provided with two driven wheels 19 disposed in parallel; the driven wheels are in engaged connection to the driving wheel; the front side of the first platy body is provided with a sliding plate 22 ; a steering member 29 is disposed above the sliding plate, and the cam 20 for pushing the steering member 29 to deflect is disposed below the driven wheel; the second platy body 23 is disposed below the first platy body; a back portion of the sliding plate extends into a space between the first platy body and the second plat
  • the first brushing sheet bracket 31 comprises a second through hole for receiving the second rotating shaft, and the first brushing sheet 26 is disposed below the first brushing sheet bracket; a back portion of the second platy body comprises a third cylindrical protrusion; a second brushing sheet bracket 33 is disposed below the second platy body; the third cylindrical protrusion is taken as the third rotating shaft; the second brushing sheet bracket comprises a third through hole for receiving the third rotating shaft, and the second brushing sheet 25 is disposed below the second brushing sheet bracket; the lower surface of the second platy body is provided with the brush bristle; the rear side surface of the first brushing sheet is provided with the brush bristle, and the front side surface of the second brushing sheet is provided with the brush bristle.
  • a self-adaptive effect that the brush bristles automatically attach to the teeth can achieve the purpose of effectively cleaning the teeth of people with different sizes of oral cavities and teeth.
  • the design of the three-sided brush bristles solves the cleaning problem of the blind area on the inner side of the tooth and avoids the development of various bad tooth brushing habits. A user no longer needs to change the position of the toothbrush to search for a cleaning point and only needs to push the toothbrush head to complete the whole tooth brushing process, such that the tooth brushing process is simplified and the tooth brushing efficiency is improved.
  • the driven wheel and the cam are of an integrated structure.
  • the driven wheel and the cam are integrally formed by a plastic, such that a transmission effect is guaranteed.
  • the steering member is a bulky body.
  • a side portion of the steering member close to the driven wheel is provided with a groove.
  • a bottom surface of the groove is cambered. It is ensured that the pushing effect that the cam pushes the steering member smoother.
  • first brushing sheet brackets There are two first brushing sheet brackets, and the two first brushing sheet brackets are respectively disposed on two side portions of the lining plate; and there are two second brushing sheet brackets, and the two second brushing sheet brackets are respectively disposed on two side portions of the second platy body.
  • first brushing sheets and second brushing sheets there are two first brushing sheets and second brushing sheets; the four brushing sheets are rotatable, and different curved surfaces of teeth are laminated according to the design of the split brush bristles effectively, such that teeth gaps are cleaned efficiently.
  • the brush bristles disposed on the lower surface of the second platy body are disposed vertically, and the brush bristles disposed on the rear side surface of the first brushing sheet are disposed obliquely and the brush bristles disposed on the front side surface of the second brushing sheet are disposed obliquely.
  • the rear side surface of the first brushing sheet comprises a first embedding groove, and a first tooth contact piece 24 is disposed in the first embedding groove; the first tooth contact piece comprises a first protrusion, and an outer side surface of the first protrusion is cambered; and a front side surface of the second brushing sheet comprises a second embedding groove; a second tooth contact piece 34 is disposed in the second embedding groove; the second tooth contact piece comprises a second protrusion, and an outer side surface of the second protrusion is cambered. Both the first tooth contact piece and the second tooth contact piece are strip-type body.
  • first protrusions and the two first protrusions are disposed on two side portions of the first tooth contact piece; and there are two second protrusions and the two second protrusions are disposed on two side portions of the second tooth contact piece.
  • the first tooth contact piece and the second tooth contact piece in contact with teeth with different thicknesses can push the first brushing sheet and the second brushing sheet to expand towards two sides along with thickness change of the teeth so as to be self-adaptive to the thickness change from the front tooth to the molar tooth.
  • the two first protrusions and two second protrusion fit the surfaces of the teeth during use, such that the brushing sheets fit the surfaces of the teeth better after rotation, and thus, the contact area between the brush bristles and the surfaces of the teeth is larger, and the cleaning effect is improved.
  • the upper portion of the first cylindrical protrusion is provided with annular protrusion for fixing the handle part.
  • the first platy body is provided with two driven wheel mounting columns; middle portions of the driven wheel and the cam are provided with a fourth through hole for penetrating the driven wheel mounting columns; a second retainer ring for fixing the position of the driven wheel is disposed above the driven wheel, and the second retainer ring is fixed to the upper portion of the driven wheel mounting columns.
  • the cross section of the first brush bristle bracket is V-shaped; the second mounting hole is formed in the middle portion of the brush bristle bracket; two side portions of the first brush bristle bracket are provided with first insertion holes; the upper portion of the first brushing sheet is provided with two cylindrical protrusions, and the cylindrical protrusions are inserted into the second insertion holes; the cross section of the second brush bristle bracket is V-shaped; the third mounting hole is formed in the middle portion of the brush bristle bracket; two side portions of the second brush bristle bracket are provided with second insertion holes; the upper portion of the second brushing sheet is provided with two cylindrical protrusions, and the cylindrical protrusions are inserted into the second insertion holes.
  • the structural stability of the device is improved.
  • the front surface of the toothbrush is placed in the oval cavity, and the user pushes the handle part along a tooth-brushing direction; the handle part rotates, and the driving wheel disposed on the front side of the handle part is in engaged transmission with the driven wheel; the driven wheel drives the cam below to push the steering member to deflect at angle, such that a certain gap is distracted to fit a corner of a tooth; the first tooth contact piece and the second tooth contact piece mounted on the first brushing sheet and the second brushing sheet are in contact with the teeth with different thicknesses so as to further push the first brushing sheet and the second brushing sheet to expand towards two sides along with thickness change to be self-adaptive to the thickness change from the front tooth to the molar tooth, and then the brush bristle is frapped by the spring to fit the tooth. Further, by matching and exerting the parts, a self-adaptive effect of expanding the toothbrush head, clinging the toothbrush head to the teeth and transforming the angle freely is achieved.
  • a self-adaptive effect that the brush bristles automatically attach to the teeth can achieve the purpose of effectively cleaning the teeth of people with different sizes of oral cavities and teeth.
  • the design of the three-sided brush bristles solves the cleaning problem of the blind area on the inner side of the tooth and avoids the development of various bad tooth brushing habits. A user no longer needs to change the position of the toothbrush to search for a cleaning point and only needs to push the toothbrush head to complete the whole tooth brushing process, such that the tooth brushing process is simplified and the tooth brushing efficiency is improved.
  • a cross section of the cam is elliptical.
  • the electric toothbrush comprises two first brushing sheets, and the two first brushing sheets are respectively disposed on two side portions of the first sliding piece; and the electric toothbrush also comprises two second brushing sheets, and the two second brushing sheets are respectively disposed on two side portions of the second sliding piece.
  • the first brushing sheets are connected to the first sliding piece via the second rotating shaft and the second brushing sheets are connected to the second sliding piece via the third rotating shaft.
  • the four brushing sheets are rotatable, and different curved surfaces of teeth are laminated according to the design of the split brush bristles effectively, such that teeth gaps are cleaned efficiently.
  • the brush bristles disposed on the lower surface of the first platy body are disposed vertically, the brush bristles disposed on the rear side surface of the first brushing sheet are disposed obliquely and the brush bristles disposed on the front side surface of the second brushing sheet are disposed obliquely.
  • Both the first sliding piece and the second sliding piece are bulky bodies; the middle of each of the bulky bodies is provided with a groove for placing the first platy body; the cam is disposed above the first platy body, and the spring is disposed below the first platy body.
  • Two side portions on the first platy body are provided with strip-type protrusions, and both the first sliding piece and the second sliding piece are provided with strip-type grooves matched with the strip-type protrusions. The using effect of the device is ensured, such that the first sliding piece and the second sliding piece are prevented from sliding laterally.
  • the rear side surface of the first brushing sheet comprises a first embedding groove; a first tooth contact piece is disposed in the first embedding groove; the first tooth contact piece comprises a first protrusion, and an outer side surface of the first protrusion is cambered; and a front side surface of the second brushing sheet comprises a second embedding groove; a second tooth contact piece is disposed in the second embedding groove; the second tooth contact piece comprises a second protrusion, and an outer side surface of the second protrusion is cambered.
  • Both the first tooth contact piece and the second tooth contact piece are strip-type body.
  • first protrusions and the two first protrusions are disposed on two side portions of the first tooth contact piece; and there are two second protrusions and the two second protrusions are disposed on two side portions of the second tooth contact piece.
  • the first tooth contact piece and the second tooth contact piece in contact with teeth with different thicknesses can push the first brushing sheet and the second brushing sheet to expand towards two sides along with thickness change of the teeth so as to be self-adaptive to the thickness change from the front tooth to the molar tooth.
  • the two first protrusions and two second protrusion fit the surfaces of the teeth during use, such that the brushing sheets fit the surfaces of the teeth better after rotation, and thus, the contact area between the brush bristles and the surfaces of the teeth is larger, and the cleaning effect is improved.
  • the front surface of the toothbrush is placed in the oval cavity, the user pushes the handle part along a tooth-brushing direction, the handle part rotates, and the cam disposed on the front side of the handle part pushes and distracts the first sliding piece and the second sliding piece to fit the corner of the tooth; the first tooth contact piece and the second tooth contact piece mounted on the first brushing sheet and the second brushing sheet are in contact with the teeth with different thicknesses so as to further push the first brushing sheet and the second brushing sheet to deflect and expand towards two sides along with thickness change to be self-adaptive to the thickness change from the front tooth to the molar tooth, and then the brush bristle is frapped by the spring to fit the tooth. Further, by matching and exerting the parts, a self-adaptive effect of expanding the toothbrush head, clinging the toothbrush head to the teeth and transforming the angle freely is achieved.
  • an electric toothbrush with the three-sided brush bristles comprises a toothbrush body; the toothbrush body comprises a toothbrush head; the toothbrush head comprises a handle part 44 ; the first platy body 47 is disposed below the handle part, and a first brushing sheet 51 and a second brushing sheet 50 disposed oppositely to each other are disposed below the first platy body; a lower surface of the first platy body is provided with a brush bristle; a rear side surface of the first brushing sheet is provided with a brush bristle and a front side surface of the second brushing sheet is provided with a brush bristle; the second platy body 45 is disposed below the handle part, the second platy body comprises a first cylindrical protrusion 46 , and the front portion of the handle part is provided with the first groove for receiving the first cylindrical protrusion; the two second brushing sheets are disposed below the rear portion of the second platy body; the middle portion of the first platy body comprises a sliding groove for receiving the second platy body, and
  • a self-adaptive effect that the brush bristles automatically attach to the teeth can achieve the purpose of effectively cleaning the teeth of people with different sizes of oral cavities and teeth.
  • the design of the three-sided brush bristles solves the cleaning problem of the blind area on the inner side of the tooth and avoids the development of various bad tooth brushing habits. A user no longer needs to change the position of the toothbrush to search for a cleaning point and only needs to push the toothbrush head to complete the whole tooth brushing process, such that the tooth brushing process is simplified and the tooth brushing efficiency is improved.
  • the front portion of the handle part comprises a second groove; a side wall of the second groove is provided with a fourth cylindrical protrusion 57 and a fifth cylindrical protrusion 58 ; a first connecting rod 59 is fixed to the fourth cylindrical protrusion; a cross section of the first connecting rod is V-shaped, and the middle portion of the first connecting rod is provided with a third through hole for receiving the fourth cylindrical protrusion; the lower portion of the pull rod is provided with a third protrusion for pushing and pulling the first connecting rod, and the third protrusion is disposed above the third through hole; the front side of the first connecting rod is provided with a second connecting sheet 60 ; the first connecting rod is provided with a sixth cylindrical protrusion; the back portion of the second connecting sheet is provided with a fourth through hole for receiving the sixth cylindrical protrusion; the front side of the second connecting sheet is provided with the second connecting rod 61 ; the back portion of the second connecting rod is provided with a seventh cylindrical protrusion, and the front portion of the second connecting sheet is provided with a fifth
  • the pushing piece and the sliding pieces are in contact or non-contact.
  • the pushing piece pushes the sliding pieces to move forwards;
  • the sliding pieces drive the second brushing sheet to move forward so as to further drive the first brushing sheet and the second brushing sheet to expand towards two sides along with thickness change to be self-adaptive to the thickness change from the front tooth to the molar tooth;
  • a third protrusion on the lower portion of the pull rod pushes the first connecting rod;
  • the first connecting rod drives the second connecting rod to move via the second connecting sheet so as to lift the upper portion of the second connecting rod upwards and push the pushing piece upwards, such that the pushing piece and the sliding piece are in a non-contact condition, and under the non-contact condition, the sliding piece and the handle part are in contact;
  • the handle part rotates to push the sliding pieces, and the toothbrush head is not limited in rotating angle as the pushing
  • the cross section of the front portion of the second protrusion is elliptical.
  • the pushing piece is a bulky body; two side portions of the bulky body are provided with fourth protrusion bended outwards, and the cross section of the front portion of the fourth protrusion is elliptical. It is convenient for the second protrusion to push the sliding pieces to deflect smoother and for the pushing piece to push the sliding piece to move forward smoother.
  • the brush bristles d on the lower surface of the sliding piece are disposed vertically; the brush bristles on the front side surface of the first brushing sheet are disposed obliquely, and the brush bristles on the rear side surface of the second brushing sheet are disposed obliquely.
  • the front surface of the toothbrush is placed in the oval cavity; the user pushes the handle part along a tooth-brushing direction; the handle part rotates about the first cylindrical protrusion, and the second protrusion disposed on the front side of the handle part is in contact with two third cylindrical protrusions below the rotating piece to push the rotating sheet to deflect in angle, such that the rotating sheet drives the first brushing sheet below to deflect via the connecting rod, and thus, a gap between the first brushing sheet and the second brushing sheet is distracted to fit the corner of the tooth; and meanwhile, the pushing piece disposed on the front side of the handle part pushes the sliding pieces to move forwards, and the sliding pieces drive the first brushing sheet to move forwards to further drive the first brushing sheet and the second brushing sheet to expand towards two sides along with thickness change to be self-adaptive to the thickness change from the front tooth to the molar tooth, and then the brush bristle is frapped by the spring to fit the tooth. After use of the toothbrush, the toothbrush head is restored
  • a self-adaptive effect that the brush bristles automatically attach to the teeth can achieve the purpose of effectively cleaning the teeth of people with different sizes of oral cavities and teeth.
  • the design of the three-sided brush bristles solves the cleaning problem of the blind area on the inner side of the tooth and avoids the development of various bad tooth brushing habits. A user no longer needs to change the position of the toothbrush to search for a cleaning point and only needs to push the toothbrush head to complete the whole tooth brushing process, such that the tooth brushing process is simplified and the tooth brushing efficiency is improved.

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  • Health & Medical Sciences (AREA)
  • Dentistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Epidemiology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Brushes (AREA)
US17/403,817 2019-03-11 2021-08-16 Electric toothbrush comprising three-sided bristles Active 2041-06-11 US12048602B2 (en)

Priority Applications (1)

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US18/755,628 US20240341937A1 (en) 2019-03-11 2024-06-26 Toothbrush head for electric toothbrush

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CN201910183180.4A CN109793589B (zh) 2019-03-11 2019-03-11 一种采用三面刷毛的电动牙刷
CN201910183180.4 2019-03-11
PCT/CN2020/076450 WO2020181984A1 (zh) 2019-03-11 2020-02-24 一种采用三面刷毛的电动牙刷

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EP (2) EP4190277B1 (de)
JP (1) JP7209106B2 (de)
KR (1) KR102578900B1 (de)
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CN109793589B (zh) 2019-03-11 2021-01-15 上海黑仙智能科技有限公司 一种采用三面刷毛的电动牙刷
CN111202604B (zh) * 2020-02-27 2025-04-15 上海黑仙智能科技有限公司 一种可维持上侧刷毛位置的环绕式牙刷
CN111772846B (zh) * 2020-06-19 2021-11-23 德州职业技术学院（德州市技师学院） 一种双刷头槽式清洁牙刷
CN111772329B (zh) * 2020-08-07 2025-08-01 上海黑仙智能科技有限公司 一种采用弹簧的电动牙刷刷头
KR102678928B1 (ko) * 2021-08-29 2024-06-28 안택호 칫솔 헤드의 방향이 변하는 다면 세정칫솔

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CN109864830A (zh) 2019-03-11 2019-06-11 上海拓仙智能科技有限公司 一种环绕式自适应电动牙刷
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CN109793586B (zh) 2019-03-11 2021-03-30 上海黑仙智能科技有限公司 一种设有三面刷毛的环绕式电动牙刷
CN109793588A (zh) 2019-03-11 2019-05-24 上海拓仙智能科技有限公司 一种设有复位机构的环绕式自适应电动牙刷
CN109793589B (zh) 2019-03-11 2021-01-15 上海黑仙智能科技有限公司 一种采用三面刷毛的电动牙刷
CN109793586A (zh) 2019-03-11 2019-05-24 上海拓仙智能科技有限公司 一种设有三面刷毛的环绕式电动牙刷
CN111202604A (zh) 2020-02-27 2020-05-29 上海黑仙智能科技有限公司 一种可维持上侧刷毛位置的环绕式牙刷
CN111772329A (zh) 2020-08-07 2020-10-16 上海黑仙智能科技有限公司 一种采用弹簧的电动牙刷刷头
CN111759515A (zh) 2020-08-07 2020-10-13 上海黑仙智能科技有限公司 一种采用扭簧的电动牙刷刷头
CN111759515B (zh) 2020-08-07 2022-02-11 上海黑仙智能科技有限公司 一种采用扭簧的电动牙刷刷头

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AU2022287545B2 (en) 2024-07-18
AU2020238413B2 (en) 2022-09-15
US20210369432A1 (en) 2021-12-02
CA3131201C (en) 2023-10-24
JP2022521999A (ja) 2022-04-13
EP3912593B1 (de) 2024-07-10
KR102578900B1 (ko) 2023-09-15
CA3131201A1 (en) 2020-09-17
AU2022287545A1 (en) 2023-02-02
EP3912593C0 (de) 2024-07-10
EP3912593A4 (de) 2022-03-09
CN109793589B (zh) 2021-01-15
WO2020181984A1 (zh) 2020-09-17
EP4190277A1 (de) 2023-06-07
US20240341937A1 (en) 2024-10-17
KR20210119502A (ko) 2021-10-05
EP3912593A1 (de) 2021-11-24
AU2020238413A1 (en) 2021-09-16
EP4190277B1 (de) 2026-03-25
JP7209106B2 (ja) 2023-01-19

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